Its full name is "The Price Is Right" Contestants had to guess the price of something... For every pound they were wrong, the skier type thing would go up the slope.
I also thought, "the price is right".
Sam's description is pretty much spot on.
If the price was incorrect, the skier would go up the slope, 1 notch for every pound out - if it fell off at the top, they lost.
So sorry for doubting you Sam - that is definitely the right one. We spent the Christmas holiday with my mum-in-law and every time she went upstairs on her stairlift it reminded me of it!!!!